Vehicle authentication device and vehicle control system

ABSTRACT

A vehicle authentication device includes an electronic control unit. The electronic control unit is configured to display predetermined verification information on a display device, receive, via an information processor possessed by a user, information on an operation performed by the user after the verification information is displayed, and determine that the information processor is present inside a vehicle cabin, when the information on the operation has a predetermined correspondence with the verification information.

INCORPORATION BY REFERENCE

The disclosure of Japanese Patent Application No. 2018-114274 filed onJun. 15, 2018 including the specification, drawings and abstract isincorporated herein by reference in its entirety.

BACKGROUND 1. Technical Field

The disclosure relates to an authentication device provided in a vehicleand configured to authenticate an information processor possessed by auser, and a vehicle control system including the authentication deviceand the information processor.

2. Description of Related Art

There has been proposed a so-called smart system in which, when a userwho possesses an electronic key or the like authenticated via wirelesscommunications with a vehicle performs a predetermined operation ofpressing down a start-stop switch in a vehicle cabin, for example, avehicle operation such as engine starting or power supply staring iscontrollable.

In the meantime, as a technology to authenticate a user, an earbiometrics technology using a mobile phone device is proposed byJapanese Unexamined Patent Application Publication No. 2010-086328 (JP2010-086328 A). In the ear biometrics technology, a reference sound isemitted to the ear canal of the user from the mobile phone device put onthe ear of the user, and the echo of the reference sound reflected andreturned from the tympanic membrane is collected by the mobile phonedevice, so that the user can be authenticated based on the feature ofthe echo thus collected.

Accordingly, it is conceivable that an authentication process between auser and a vehicle is performed by use of an information processorhaving such an ear biometrics function instead of an electronic key fora smart system.

SUMMARY

The operation such as engine starting or power supply staring in avehicle is permitted only at the time when an electronic key or the likeauthenticated by the vehicle is present inside the vehicle, except aspecial operation such as a remote engine starter. On this account, in acase where such a vehicle operation is requested from a user, it isnecessary, in a vehicle control system, to determine whether theelectronic key or the like is present inside the vehicle cabin or not,when the vehicle authenticates the electronic key or the like.

Here, the information processor having the ear biometrics function asdescribed above may be equipped with a telecommunications standardcommunicable in a wider range than an electronic key for exclusive useof a vehicle. On this account, in a case where the information processorequipped with a telecommunications standard with a wide communicationrange is used instead of the electronic key for exclusive use of thevehicle, even if the information processor is provided outside thevehicle, the communication is performable, and therefore, it is hard toaccurately determine whether or not the information processor is presentinside the vehicle cabin, differently from the electronic key.

The disclosure provides a vehicle authentication device and a vehiclecontrol system each of which can accurately determine whether or not aninformation processor is present inside a vehicle cabin, regardless of atelecommunications standard provided in the information processor.

A vehicle authentication device according to a first aspect of thedisclosure is provided in a vehicle and includes an electronic controlunit. The electronic control unit is configured to display predeterminedverification information on a display device provided in the vehicle ata predetermined timing such that the verification information is visibleto a user inside a vehicle cabin. The electronic control unit isconfigured to receive, via an information processor possessed by theuser, information on an operation performed by the user after theverification information is displayed. The electronic control unit isconfigured to determine that the information processor is present insidethe vehicle cabin, when the information on the operation has apredetermined correspondence with the verification information.

In the aspect, the predetermined verification information is displayedon the display device in a form recognizable by an occupant inside thevehicle cabin at the timing when the user gets in the vehicle, and theinformation on the operation performed by the user after theverification information is displayed is received via the informationprocessor. Hereby, when the information on the operation performed bythe user, received via the information processor possessed by the user,has a predetermined correspondence with the verification information, itcan be determined that the user is present inside the vehicle cabin.Accordingly, it can be also determined that the information processorpossessed by the user determined to be present inside the vehicle cabinis also present inside the vehicle cabin.

Further, in the above aspect, the verification information may be adigit string or a text string. The electronic control unit may beconfigured to receive, via the information processor, utteranceinformation on an utterance made by the user as the information on theoperation. The electronic control unit may be configured to determinethat the information processor is present inside the vehicle cabin, whenthe utterance information matches the verification information.

In this aspect, a digit string or a text string is used as theverification information, and the utterance information on the utterancemade by the user is acquired via the information processor. Hereby, justby verifying whether the digit string or the text string matches theutterance information or not, it can be easily determined whether theinformation processor possessed by the user is present inside thevehicle cabin or not.

Further, in the above aspect, the electronic control unit may beconfigured to display the verification information at a position on thedisplay device at which the verification information is visible to theuser sitting on a driver seat.

In this aspect, only the user who sits on the driver seat can know theverification information. Hereby, based on whether or not theinformation on the operation performed by the user has a predeterminedcorrespondence with the verification information, it can be determinedwhether or not the information processor possessed by the user ispresent near the driver seat inside the vehicle cabin.

Further, in the above aspect, when the electronic control unitdetermines that the information processor is present inside the vehiclecabin, an engine or a power supply of the vehicle may be started.

In this aspect, the engine or the power supply of the vehicle is startedpromptly based on the determination that the information processorpossessed by the user is present inside the vehicle cabin. This shortensthe time to engine starting or power supply starting after the user getsin the vehicle, so that convenience for the user improves.

Further, in the above aspect, the electronic control unit may beconfigured to display the verification information on the display deviceat random for each timing.

In this aspect, the verification information to be displayed on thedisplay device is changed at random for each timing. Hereby, even if theuser performs, outside the vehicle cabin, an operation corresponding toverification information memorized previously, for example, informationon the operation does not match current verification information.Accordingly, it is not wrongly determined that the information processoris present inside the vehicle cabin. This makes it possible toaccurately determine whether or not the information processor is presentinside the vehicle cabin.

Further, in the above aspect, the timing may be a point of time when aseries of operations of unlocking, opening, and closing of a door of thevehicle are completed.

In this aspect, the verification information is displayed on the displaydevice after a series of operations based on which it can be estimatedthat the user has moved into the vehicle from the outside of the vehicle(the user has got into the vehicle) are detected. This makes it possibleto accurately determine whether or not the information processor ispresent inside the vehicle cabin.

Further, in the above aspect, the information processor may be a deviceconfigured to be put on the earhole of the user and to authenticate theuser based on the property of echo in the earhole.

Like this aspect, when a device that can highly accurately authenticatethe user wearing the device is used as the information processor, it ispossible to achieve securer authentication.

Further, in the above aspect, the electronic control unit may beconfigured to display the verification information on the display devicewith luminance lower than luminance of other pieces of information.

Like this aspect, when the verification information is displayed withluminance lower than luminance of other pieces of information, the usercan easily recognize that the information thus displayed is theverification information, and further, the verification information canbe hardly visible from the outside of the vehicle cabin.

A vehicle control system according to a second aspect of the disclosureincludes an information processor possessed by a user, and anauthentication device provided in a vehicle and configured toauthenticate the information processor. The information processorincludes an information acquisition portion configured to acquireinformation on an operation performed by the user, and a transmissionportion configured to transmit the information on the operation to theauthentication device, the information being acquired by the informationacquisition portion. The authentication device includes an electroniccontrol unit configured to display predetermined verificationinformation on a display device provided in the vehicle at apredetermined timing such that the verification information is visibleto the user inside a vehicle cabin. The electronic control unit isconfigured to receive, via the information processor, the information onthe operation performed by the user after the verification informationis displayed. The electronic control unit is configured to determinethat the information processor is present inside the vehicle cabin, whenthe information on the operation has a predetermined correspondence withthe verification information.

In the above aspect, the predetermined verification information isdisplayed on the display device in a form recognizable by the occupantinside the vehicle cabin at the timing when the user gets in thevehicle, and the information on the operation performed by the userafter the verification information is displayed is received via theinformation processor. Hereby, when the information on the operationperformed by the user, received via the information processor possessedby the user, has a predetermined correspondence with the verificationinformation, it can be determined that the user is present inside thevehicle cabin. Accordingly it can be also determined that theinformation processor possessed by the user determined to be presentinside the vehicle cabin is also present inside the vehicle cabin.

With the vehicle authentication device and the vehicle control system inthe above aspects, it is possible to accurately determine whether or notthe information processor is present inside the vehicle cabin regardlessof a provided telecommunications standard.

BRIEF DESCRIPTION OF THE DRAWINGS

Features, advantages, and technical and industrial significance ofexemplary embodiments of the disclosure will be described below withreference to the accompanying drawings, in which like numerals denotelike elements, and wherein:

FIG. 1 is a view to describe the outline of a vehicle control systemaccording to the present embodiment;

FIG. 2 is a view illustrating a detailed exemplary configuration of avehicle authentication device;

FIG. 3 is a view illustrating a detailed exemplary configuration of aninformation processor;

FIG. 4 is a flowchart illustrating the procedure of a positiondetermination process performed by the vehicle authentication device;and

FIG. 5 illustrates an example of a state where a user wearing theinformation processor makes an utterance in accordance with verificationinformation displayed on a display device.

DETAILED DESCRIPTION OF EMBODIMENTS

Outline

An authentication device of the disclosure is configured to display, ona display, information such as a digit string in a form recognizable byan occupant inside a vehicle cabin at a timing when a user gets in avehicle and is also configured to receive information acquired by aninformation processor possessed by the user, e.g., information such as acollected utterance made by the user. When the information received fromthe information processor has a predetermined correspondence with theinformation displayed on the display, the authentication devicedetermines that the user and the information processor are presentinside the vehicle cabin, but in other cases, the authentication devicedetermines that the user and the information processor are not presentinside the vehicle cabin.

Configuration

Vehicle Control System

FIG. 1 is a view to describe the outline of a vehicle control system 1according to one embodiment of the disclosure. The vehicle controlsystem 1 illustrated in FIG. 1 is constituted by a vehicleauthentication device 10 provided in a vehicle 5, and an informationprocessor 20 possessed by a user 30 (put on or carried by the user 30).

In the vehicle control system 1, when the user 30 performs a vehicleoperation such as engine starting (IG_ON) or turning-on of a powersupply (Ready_ON), an authentication process of determining whether ornot the information processor 20 is a rightful device that can operatethe vehicle 5 is performed between the vehicle authentication device 10and the information processor 20. Note that authentication between thevehicle authentication device 10 and the information processor 20 may beperformed indirectly via a wireless communications apparatus (not shown)such as a smartphone, for example.

Further, in the vehicle control system 1, in order to perform thevehicle operation using the information processor 20 with a highersecurity than a vehicle operation using an electronic key for exclusiveuse of the vehicle, an authentication process of determining whether ornot the user 30 possessing the information processor 20 is a personhaving an authority to operate the information processor 20 may beperformed. This authentication process can use, for example, biometricsauthentication such as ear biometrics or fingerprint authentication.

Further, in the vehicle control system 1, in order that the vehicleoperation using the information processor 20 has a further highersecurity, the vehicle authentication device 10 of the vehicle 5 highlyaccurately determines the position of the information processor 20, morespecifically, whether the information processor 20 is present inside thevehicle cabin or outside the vehicle cabin. The following describes atechnique to highly accurately determine whether the informationprocessor 20 is present inside the vehicle cabin or not.

Vehicle Authentication Device

FIG. 2 illustrates a detailed exemplary configuration of the vehicleauthentication device 10 illustrated in FIG. 1. The vehicleauthentication device 10 in FIG. 2 includes a timing determinationportion 11, a display control portion 12, a display device 13, aninformation receiving portion 14, a position determination portion 15,and an authentication processing portion 16.

The timing determination portion 11 can determine a timing whenverification information (described later) is displayed on the displaydevice 13 via the display control portion 12. The timing should be setto a getting-in timing when it can be estimated that the user 30 hasmoved into the vehicle from the outside of the vehicle (the user 30 hasgot into the vehicle 5). As an example, the timing can be set to a pointof time when a series of operations to get in the vehicle are completed,the series of operations including unlocking of a door of the vehicle 5,opening of the door, and closing of the door after that, for example.Alternatively, the timing can be set to a point of time when a sittingsensor provided in a seat detects sitting. Each time when the timingdetermination portion 11 determines the timing, the timing determinationportion 1I instructs the display control portion 12 to displayverification information.

The display control portion 12 can generate predetermined verificationinformation based on an instruction from the timing determinationportion 11 and cause the display device 13 to display the verificationinformation thus generated. The verification information is typicallyinformation to request the user 30 to make an utterance, and is, forexample, numeral information (e.g., “45281”), character information(e.g., “ACGTS”), information in combination of the numeral informationand the character information, or the like. The character informationmay be a word (e.g., “Airplane”) having a meaning. Further, theverification information may be information (e.g., “head:left→right→up”) to request the user 30 to make a gesture.

Each time when the display control portion 12 receives an instructionfrom the timing determination portion 11, the display control portion 12generates verification information (a digit string using random numbers,a text string, or the like) at random. The display control portion 12controls to display the verification information at a specific positionon the display device 13. The specific position is a position visible toan occupant inside the vehicle cabin of the vehicle 5, more desirably, aposition visible only to an occupant who sits on a driver seat. Forexample, the specific position can be set to a position of a meter panelthat is covered with a hood and is not visible from the outside of thevehicle, or the like. Further, the display control portion 12 maycontrol to display the verification information on the display device 13in a specific form. The specific form can be such a form that theverification information has luminance lower than that of other piecesof information so that the verification information is distinguishedfrom the other pieces of information. The decrease amount of theluminance can be determined in accordance with brightness around thedisplay device 13.

The display device 13 is a display on which the verification informationgenerated by the display control portion 12 can be displayed. As thedisplay device 13, a multi-information display (MID), a head up display(HUD), a center display, and the like can be used.

The information receiving portion 14 can receive information on anoperation performed by the user 30 from the information processor 20. Inthe present embodiment, the information on the operation, received bythe information receiving portion 14 after the verification informationis displayed on the display device 13, is focused on. The information onthe operation is, for example, information (utterance information) on anutterance made by the user 30, information (gesture information) on agesture made by the user 30, and the like.

The position determination portion 15 can determine whether theinformation processor 20 is present inside the vehicle cabin or not,based on the information on the operation, received by the informationreceiving portion 14, and the verification information displayed on thedisplay device 13 by the display control portion 12. More specifically,when the information on the operation has a predetermined correspondencewith the verification information, the position determination portion 15determines that the information processor 20 is present inside thevehicle cabin. The reason is as follows. As described above, theverification information is displayed at a position visible to theoccupant inside the vehicle cabin. Accordingly, when the information onthe operation corresponding to the verification information can bereceived from the information processor 20, it can be estimated that theuser 30 who has transmitted the information on the operation via theinformation processor 20 possessed by the user 30 is present inside thevehicle cabin.

In the determination by the position determination portion 15, in a casewhere the verification information is a digit string, for example, whenutterance information (a sequence of numbers read aloud) from the user30 matches the digit string, it is determined that the informationprocessor 20 is present inside the vehicle cabin of the vehicle 5. In acase where the verification information is a digit string or a textstring, the position determination portion 15 can easily determinewhether the information processor 20 possessed by the user 30 is presentinside the vehicle cabin or not, just by verifying whether the digitstring or the text string matches the utterance information from theuser 30 or not. Note that, when the information on the operation has apredetermined similarity with the verification information, the positiondetermination portion 15 may determine that the information processor 20is present inside the vehicle cabin of the vehicle 5.

Here, in a case where the verification information is generated by thedisplay control portion 12 at random, even if the user performs, outsidethe vehicle cabin, an operation corresponding to verificationinformation memorized at the time when the user gets in the vehiclepreviously, information on the operation does not match currentverification information. Hereby, it is possible to prevent the positiondetermination portion 15 from wrongly determining that the informationprocessor is present inside the vehicle cabin, thereby making itpossible to improve accuracy of the determination. Further, when theverification information is displayed by the display control portion 12with luminance lower than that of other pieces of information, the user30 can easily recognize that displayed information is the verificationinformation, and further, the identification information can be hardlyvisible from the outside of the vehicle cabin. Hereby, the accuracy ofthe determination, by the position determination portion 15, on whetheror not the information processor 20 is present inside the vehicle cabinor not can be improved.

The authentication processing portion 16 can execute a predeterminedauthentication process on the information processor 20 only when theposition determination portion 15 determines that the informationprocessor 20 is present inside the vehicle cabin of the vehicle 5. Thepredetermined authentication process is executed in response to arequest of an operation (except a request of a special operation such asa remote engine starter) such as engine starting or power supply staringof the vehicle 5 that is permitted only at the time when the informationprocessor 20 is present inside the vehicle cabin. Note that, in a casewhere the verification information is displayed at the position visibleonly to the occupant sitting on the driver seat by the display controlportion 12 and the position determination portion 15 determines that theinformation processor 20 is present inside the vehicle cabin, it can beestimated that the user 30 wants to drive the vehicle 5. At this time,the engine or the power supply of the vehicle 5 may be started promptlybased on the determination that the information processor 20 is presentinside the vehicle cabin. This shortens the time to engine starting orpower supply starting after the user gets in the vehicle, so thatconvenience for the user improves.

Note that, at a point of time when the position determination portion 15determines, based on an utterance or a gesture made by the user 30, thatthe information processor 20 is present inside the vehicle cabin of thevehicle 5, the engine or the power supply may be started promptlywithout operating a switch for engine starting or power supply starting,the switch being provided in an instrument panel or the like of thevehicle 5, for example. In such a scene, it can be determined that theuser 30 has an intention of starting the engine or the power supply, andwhen a starting operation is performed smoothly, it is possible toimprove the convenience for the user 30.

Note that some or all of the constituents such as the timingdetermination portion 11, the display control portion 12, theinformation receiving portion 14, the position determination portion 15,and the authentication processing portion 16 can be typicallyconstituted by an electronic control unit (ECU) including a processor, amemory, an input-output interface, and so on. In the electronic controlunit, the processor reads out and executes a predetermined programstored in the memory, so that a function of each of the constituents isimplemented.

Information Processor

FIG. 3 illustrates a detailed exemplary configuration of the informationprocessor 20 illustrated in FIG. 1. The information processor 20 of FIG.3 includes an information acquisition portion 21, an informationtransmission portion 22, and an authentication processing portion 23.

The information acquisition portion 21 can acquire information on anoperation performed by the user 30. Typically, the informationacquisition portion 21 acquires the information on the operationperformed by the user 30 in accordance with verification informationafter the verification information is displayed on the display device 13of the vehicle authentication device 10. As the information acquisitionportion 21, a microphone that can catch and collect sound around theinformation processor 20, an acceleration sensor that can detect themotion of the information processor 20, and the like can be used, forexample. Utterance information from the user 30 can be acquired by themicrophone, and gesture information in accordance with the motion of theinformation processor 20 can be acquired by the acceleration sensor.

The information transmission portion 22 can transmit, to the vehicleauthentication device 10, the information on the operation performed bythe user 30, acquired by the information acquisition portion 21. Thetransmission is also performable by use of a telecommunications standardsuch as Bluetooth (registered trademark), for example, provided in thevehicle 5 as well as the information processor 20.

The authentication processing portion 23 can execute a predeterminedauthentication process on the user 30. For example, in a case where theinformation processor 20 is a device put on the earhole of the user 30,the authentication processing portion performs ear biometrics in which asound is emitted to the tympanic membrane and an individual is specifiedbased on the frequency characteristic of a sound reflected from thetympanic membrane. Further, in a case where the information processor 20is a device put on the wrist of the user, the authentication processingportion performs fingerprint authentication or the like via a sensorprovided on a board surface. Note that the authentication processingportion 23 may not be provided in the information processor 20.

Control

With reference to FIGS. 4 and 5, the following describes a controlexecuted by the vehicle control system 1. FIG. 4 is a flowchartillustrating the procedure of a position determination process performedby the vehicle authentication device 10 of the present embodiment. FIG.5 is a view to describe an example of a state where the user 30 who sitson the driver seat and wears the information processor 20 makes anutterance in accordance with verification information displayed on thedisplay device 13. Note that the following description deals with a casewhere numeral information is used as the verification information.

The position determination process illustrated in FIG. 4 is started whenthe timing determination portion 11 determines a timing when theverification information is displayed on the display device 13 via thedisplay control portion 12.

Step S41: the display control portion 12 displays the verificationinformation on the display device 13. The display of the verificationinformation may be performed only for a given period of time set inadvance or may be performed until a determination is made in step S45 orS46 described below. In the example of FIG. 5, a digit string “45281” asthe verification information is displayed on the display device 13provided in the meter panel of the vehicle 5.

Step S42: it is determined whether or not the information receivingportion 14 has received information (utterance information) on anutterance made by the user 30 from the information processor 20. In theexample of FIG. 5, the utterance “four, five, two, eight, one” made bythe user 30 in response to the displayed digit string “45281” isreceived as the utterance information. When the utterance informationhas been received (S42, Yes), the process proceeds to step S43, and whenthe utterance information has not been received (S42, No), the processproceeds to step S44.

Step S43: the position determination portion 15 determines whether ornot the utterance information thus acquired matches the verificationinformation displayed on the display device 13 by the display controlportion 12. In the example of FIG. 5, the verification information“45281” matches the utterance information “four, five, two, eight, one.”When both pieces of information match (S43, Yes), the process proceedsto step S45, but when both pieces of information do not match (S43, No),the process proceeds to step S44.

Step S44: the position determination portion 15 determines whether ornot a predetermined time has passed in a state where the utteranceinformation has not been acquired or in a state where the acquiredutterance information does not match the verification information afterthe verification information is displayed on the display device 13. Whenthe predetermined time has passed (S44, Yes), the process proceeds tostep S46, but when the predetermined time has not passed (S44, No), theprocess returns to step S42.

Step S45: the position determination portion 15 determines that theinformation processor 20 is present inside the vehicle cabin of thevehicle 5. Based on this determination, the display control portion 12may finish the display of the verification information on the displaydevice 13. Further, when a specific vehicle operation such as enginestarting or power supply staring is performed by the user 30, theauthentication processing portion 16 permits execution of theauthentication process based on this determination. Alternatively, basedon this determination, the authentication processing portion 16 maystart the specific vehicle operation such as engine starting or powersupply staring promptly without waiting for the operation to beperformed by the user 30. Hereby, a position determination control isfinished.

Step S46: the position determination portion 15 determines that theinformation processor 20 is not present inside the vehicle cabin of thevehicle 5. Based on this determination, the display control portion 12may finish the display of the verification information on the displaydevice 13. Hereby, the position determination control is finished.

Operations and Effects

In the vehicle control system 1 according to one embodiment of thedisclosure, the vehicle authentication device 10 displays verificationinformation on the display device 13 in a form recognizable by theoccupant inside the vehicle cabin at the timing when the user gets inthe vehicle, and receives, via the information processor 20, informationon an operation performed by the user 30 after the verificationinformation is displayed.

Hereby, when the information on the operation performed by the user 30,the information being received via the information processor 20possessed by the user 30, has a predetermined correspondence with theverification information displayed inside the vehicle cabin, the vehicleauthentication device 10 can determine that the user 30 is presentinside the vehicle cabin. Accordingly, it can be also determined thatthe information processor 20 possessed by the user 30 determined to bepresent inside the vehicle cabin is also present inside the vehiclecabin.

The vehicle control system of the disclosure is usable in a case where avehicle operation is performed by authentication with a vehicle by useof an information processor (except an electronic key for exclusive useof the vehicle) possessed by a user.

What is claimed is:
 1. A vehicle authentication device provided in avehicle, the vehicle authentication device comprising: an electroniccontrol unit configured to display predetermined verificationinformation on a display device provided in the vehicle at apredetermined timing such that the verification information is visibleto a user inside a vehicle cabin, the electronic control unit beingconfigured to receive, via an information processor possessed by theuser, information on an operation performed by the user after theverification information is displayed, the electronic control unit beingconfigured to determine whether the information on the operation has apredetermined correspondence with the verification information, wherein,when the electronic control unit determines that the information on theoperation has the predetermined correspondence with the verificationinformation, the electronic control unit starts an engine or a powersupply of the vehicle, and when the electronic control unit determinesthat the information on the operation does not have the predeterminedcorrespondence with the verification information, the electronic controlunit does not start the engine or the power supply of the vehicle. 2.The vehicle authentication device according to claim 1, wherein: theverification information is a digit string or a text string; theelectronic control unit is configured to receive, via the informationprocessor, utterance information on an utterance made by the user as theinformation on the operation; and the electronic control unit isconfigured to determine that the information processor is present insidethe vehicle cabin, when the utterance information matches theverification information.
 3. The vehicle authentication device accordingto claim 1, wherein the electronic control unit is configured to displaythe verification information at a position on the display device atwhich the verification information is visible to the user sitting on adriver seat.
 4. The vehicle authentication device according to claim 1,wherein the electronic control unit is configured to display theverification information on the display device at random for eachtiming.
 5. The vehicle authentication device according to claim 1,wherein the timing is a point of time when a series of operations ofunlocking, opening, and closing of a door of the vehicle are completed.6. The vehicle authentication device according to claim 1, wherein theinformation processor is a device configured to be put on an earhole ofthe user and to authenticate the user based on a property of echo in theearhole.
 7. The vehicle authentication device according to claim 1,wherein the electronic control unit is configured to display theverification information on the display device with luminance lower thanluminance of other pieces of information.
 8. A vehicle control systemcomprising: an information processor possessed by a user; and anauthentication device provided in a vehicle and configured toauthenticate the information processor, wherein: the informationprocessor includes an information acquisition portion configured toacquire information on an operation performed by the user, and atransmission portion configured to transmit the information on theoperation to the authentication device, the information being acquiredby the information acquisition portion; the authentication deviceincludes an electronic control unit configured to display predeterminedverification information on a display device provided in the vehicle ata predetermined timing such that the verification information is visibleto the user inside a vehicle cabin, receive, via the informationprocessor, the information on the operation performed by the user afterthe verification information is displayed, and determine whether theinformation on the operation has a predetermined correspondence with theverification information, wherein, when the electronic control unitdetermines that the information on the operation has the predeterminedcorrespondence with the verification information, the electronic controlunit starts an engine or a power supply of the vehicle, and when theelectronic control unit determines that the information on the operationdoes not have the predetermined correspondence with the verificationinformation, the electronic control unit does not start the engine orthe power supply of the vehicle.
 9. A method for controlling a vehiclecomprising: displaying predetermined verification information on adisplay device in the vehicle at a predetermined timing such that theverification information is visible to a user inside a cabin of thevehicle, receiving, via an information processor of the vehicle,information on an operation performed by the user after the verificationinformation is displayed, determining, via an electronic control unit ofthe vehicle, whether the information on the operation has apredetermined correspondence with the verification information, when theelectronic control unit determines that the information on the operationhas the predetermined correspondence with the verification information,starting an engine or a power supply of the vehicle, and when theelectronic control unit determines that the information on the operationdoes not have the predetermined correspondence with the verificationinformation, not starting the engine or the power supply of the vehicle.10. A non-transitory computer-readable medium having a program storedthereon, the program, when being executed by a computer on a vehicle,instructing the vehicles to perform functions comprising: displayingpredetermined verification information on a display device in thevehicle at a predetermined timing such that the verification informationis visible to a user inside a cabin of the vehicle, receiving, via aninformation processor of the vehicle, information on an operationperformed by the user after the verification information is displayed,determining, via an electronic control unit of the vehicle, whether theinformation on the operation has a predetermined correspondence with theverification information, when the electronic control unit determinesthat the information on the operation has the predeterminedcorrespondence with the verification information, starting an engine ora power supply of the vehicle, and when the electronic control unitdetermines that the information on the operation does not have thepredetermined correspondence with the verification information, notstarting the engine or the power supply of the vehicle.